In this video, I will show you how to measure a faulty battery by measuring it with a multimeter. There is a control block on the battery. If it is green, it indicates that the battery is charged and if it is black, it indicates that the battery needs to be charged. If the indicator part is white, it indicates that the battery is pure water, acid or gel is missing. You can intervene in your battery according to the colors you see here. The battery may seem solid in the measurement, but when you press the starter, there will be a decrease in amperage and voltage. Batteries are devices that store electrical energy and transfer it as electricity when needed. And it has the ability to do this storage job for a long time. It stores up to the current capacity written on the battery. Previously, it was used in the lighting system of the car when the cars first started. Now, it is widely used in moving vehicles. The most well-known type of battery is lead acid batteries. Another name for the battery is accumulator. So how is the battery charged in vehicles? Battery charging in vehicles is done by giving energy to the battery by means of the belt while the car is running, the alternator, also known as the charger. There is acid inside the batteries. It is used in new gel batteries. Batteries that are subjected to dry accumulators are not maintained. When the accumulator is exhausted, it is replaced with a new one. There are covers on old model batteries. These covers are opened and acid is added according to the accumulator model. Gel is added to the gel accumulator. Pure water is also added to acid model batteries instead of acid. Pure water is not tap water. There are lead plates inside the battery. When we add pure water or acid to the batteries, it is filled until it reaches the plate. If the water is reduced below the plates in well-maintained batteries, it is a matter of time before it gets damaged. We should not touch our clothes while filling the acid into the batteries. The reason is that acid pierces clothes. And we should not let it touch our body. If it is, we should wash the part that touches with plenty of water. What should we pay attention to when choosing a battery? When choosing a battery, we should first know where we will use the battery. We should look at its size, i.e. length, according to where we will use it. The amperage is considered when choosing a battery. If yours is 72 amps, your battery will run out faster if you buy a low battery. If you wish, you can get a higher current. When choosing a battery, we do not decide on acidic or gel batteries. We should buy a well-maintained or non-maintained battery. And the most important thing is the battery brand. They say that cheap meat is stewed accordingly. There is a charge status indicator section on the battery. We can see whether the battery is charged from this section. There are 3 colors in this indicator panel. The first of these is green. The green color indicates that the battery is charged. The black color indicates that you want to charge the battery. Finally, the white color indicates that the pure water in the battery, that is, the acid, is finished. We check the status of the battery through these three colors. We can measure the battery with an accumulator tester. The accumulator control device measures amperage and voltage. If you do not have such a measurement device, all you need to do is get a multimeter from your electrician friend. In the measurement with a multimeter, the measuring device is set to DC voltage level. In this level, the measuring device probes are touched to the positive and negative terminals of the battery. Then the voltage measurement is made here. In this measurement, if you measure 12 volts or 24 volts in your battery, we cannot say that the battery is healthy. Have someone sit in the driver's seat of the car. While you are measuring, let them start the car. How many volts do you measure at this time? If you measure 12 volts or 24 volts again, the battery is healthy. However, if you measure values ​​such as 9 volts or 7 volts at this time, it means that your battery is dead. Charge your battery at this time. If you have charged it and the same problems persist, then you will need to change the battery. You can follow the www.formenim.com website for detailed information.